..
With that simple addition, we have added AJAX capabilities to this application, and
the page will not blink as it obtains data and renders the updates.
You can see that there is no explicit coding for a partial-page update for all content,
including price information and analytic charts. Everything is handled under the hood
by the ASP.NET AJAX runtime. You concentrate on building your application, and by
wrapping standard ASP.NET controls with an UpdatePanel, you can enable the asynchronous
functionality.
One last item to complete is a way of notifying the user when the page is being
updated. Because all updates are done asynchronously with no page refresh, the user
may be confused at times during page updates when nothing is happening. Just like an
UpdatePanel, you can create this either from the left Toolbox or by manually typing the
markup as shown here:
AssociatedUpdatePanelID="UpdatePanel1">
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